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Date: Fri, 6 May 2016 14:55:24 -0700
Message-ID: <CAH+w=7bEj5KsRF-k6K=d+13bW9EsROBfUyY0+-O67XDMOPDbTw@mail.gmail.com>
Subject: Re: Weird issue with pipeviewer and multiple pipes
From: Bart Schaefer <schaefer@brasslantern.com>
To: Zsh hackers list <zsh-workers@zsh.org>
Content-Type: multipart/alternative; boundary=001a11c37cb0223116053233841a
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Content-Type: text/plain; charset=UTF-8

On May 6, 2016 2:41 PM, "Peter Stephenson" <p.w.stephenson@ntlworld.com>
wrote:
>
> On Tue, 3 May 2016 20:56:14 -0700
> Bart Schaefer <schaefer@brasslantern.com> wrote:
> >On Tue, May 3, 2016 at 6:15 PM, Jaron L Tibbitts III <tibbs@math.uh.edu>
wrote:
> > >
> > > [2]  + 11459 done                    echo 1 |
> > >        11461 suspended (tty output)  pv -l -s $(echo 1) |
> > >        11462 interrupt               cat
> >
> > I don't know why the $(echo) makes any
> > difference to it receiving the TTOU in the first place.
>
> Actually, it looks like This Can't Possibly Happen, since $(echo 1) is
> over and done with by the time the pv is started; we've got the output,
> closed the fd, and waited for the process to finish (by PID).  So there
> is some weird lingering side effect.

Something to do with list_pipe_* handling?  Is the parent confused about
the state of the child that will eventually exec pv ?

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